Economic Manufacturing of Nano-sized High Temperature and Ultrahigh Temperature Ceramic Solid Solution Powders

纳米高温和超高温陶瓷固溶体粉末的经济制造

• 批准号: 1635957
• 负责人: Zhe Cheng
• 金额: $ 30万
• 依托单位: Florida International University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-10-01 至 2021-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1635957&HistoricalAwards=false
• 关键词: Economic; Manufacturing; Nano; sized; Temperature

High temperature ceramics and ultrahigh temperature ceramics are materials that typically have melting points above 2500-3000*C. These materials find important applications from grinding and cutting tools in machinery and mining industries to thermal insulation tiles, missile nozzles, and hypersonic vehicle leading edges in the aerospace industry. On the other hand, making these ceramic materials in the desired solid solution form will enable greater flexibility in optimizing their composition and mechanical, thermal, and chemical properties and should lead to further improved performance. This research aims to develop a scalable and economic method for the manufacturing of nano-sized ultrahigh temperature ceramic solid solution powders and provide fundamental new knowledge about the formation of such materials, especially at the nano-scale. The project will facilitate future industrial production of such important materials and advance related applications in different fields. It will also promote education and awareness in the advanced ceramics field at the institution and the broader South Florida region through various education, research, and engineering outreach activities.The central objective of the research award is to develop a low cost method for manufacturing nano-sized high temperature and ultrahigh temperature ceramic solid solution powders. The method is based on a high temperature spray pyrolysis technique that will incorporate rapid in situ carbothermal reduction reaction starting from soluble oxide and carbon precursors. An understanding of the fundamental composition-processing-structure interrelationships in the fabrication process will be obtained. The use of soluble precursors will lead to intimate mixing between oxide- and carbon-rich regions, which will help lower the carbothermal reduction reaction temperature and improve product uniformity. The adoption of spray pyrolysis at temperature higher than typically used will integrate the conventionally separate carbothermal reduction reaction as part of the spray pyrolysis process, enabling rapid, low cost, scalable production of nano-sized ceramic solid solution powders with controlled phase distributions and microstructures, all in one single step. The success of this project will not only provide an economic and scalable platform for the manufacturing of such important materials but also offer new insights about the fundamental impacts of various critical parameters from precursor chemistry and stoichiometry to processing conditions on the final phase composition, microstructure, and properties of nano-sized ceramic powders.

高温陶瓷和超高温陶瓷是熔点通常在2500-3000*C以上的材料。这些材料在机械和采矿行业的磨削和切割工具、航空航天工业的隔热瓦、导弹喷嘴和高超声速飞行器前沿等领域有着重要的应用。另一方面，将这些陶瓷材料制成所需的固溶体形式将使其在优化成分以及机械、热和化学性能方面具有更大的灵活性，并应会进一步提高性能。本研究旨在为纳米级超高温陶瓷固溶体粉末的制备提供一种可扩展的、经济的方法，并为此类材料的形成，特别是纳米级的形成提供新的基础知识。该项目将促进此类重要材料的未来工业化生产，并推动相关应用在不同领域的应用。它还将通过各种教育、研究和工程推广活动，促进该机构和更广泛的南佛罗里达地区在先进陶瓷领域的教育和意识。该研究奖的中心目标是开发一种低成本的方法来制造纳米级高温和超高温陶瓷固溶体粉末。该方法基于高温喷雾热解技术，该技术将包括从可溶性氧化物和碳前体开始的快速原位碳热还原反应。我们将对制造过程中的基本成分-加工-结构相互关系有所了解。可溶性前驱体的使用将导致氧化区和富碳区的紧密混合，这将有助于降低碳热还原反应温度，改善产物的均匀性。采用高于通常使用温度的喷雾热解将把传统分离的碳热还原反应整合为喷雾热解过程的一部分，从而能够快速、低成本、可扩展地生产具有可控相分布和微观结构的纳米陶瓷固溶体粉末，所有这些都在一个步骤中完成。该项目的成功不仅将为这些重要材料的制造提供一个经济和可扩展的平台，而且还将为从前体化学和化学计量比到工艺条件等各种关键参数对纳米陶瓷粉末的最终物相组成、微观结构和性能的根本影响提供新的见解。

项目成果

Facile one‐step high‐temperature spray pyrolysis route toward metal carbide nanopowders

• DOI: 10.1111/jace.15785
• 发表时间: 2018-06
• 期刊: Journal of the American Ceramic Society
• 影响因子: 3.9
• 作者: Junheng Xing;Paniz Foroughi;Alexander Franco Hernandez;A. Behrens;Zhe Cheng

Synthesis of nanocrystalline TaC powders via single-step high temperature spray pyrolysis from solution precursors

• DOI: 10.1016/j.ceramint.2016.11.177
• 发表时间: 2017-02
• 期刊: Ceramics International
• 影响因子: 5.2
• 作者: Zhe Cheng;Paniz Foroughi;A. Behrens

Phase control during synthesis of nanocrystalline ultrahigh temperature tantalum‐hafnium diboride powders

纳米晶超高温二硼化钽铪粉末合成过程中的相控制

• DOI: 10.1111/jace.15783
• 发表时间: 2018
• 期刊: Journal of the American Ceramic Society
• 影响因子: 3.9
• 作者: Foroughi, Paniz;Rabiei Baboukani, Amin;Franco Hernandez, Alexander;Wang, Chunlei;Cheng, Zhe
• 通讯作者: Cheng, Zhe